Answer to Question #319636 in Trigonometry for Sizzy

Question #319636

Evaluate:

sin 30⁰ cos 45⁰ − cos 30 ⁰ sin 45⁰

Expert's answer

sin 30⁰ cos 45⁰ − cos 30 ⁰ sin 45⁰"=\\frac{1}{2}*\\frac{\\sqrt{2}}{2}-\\frac{\\sqrt{3}}{2}*\\frac{\\sqrt{2}}{2}=-\\frac{\\sqrt{2}(\\sqrt{3}-1)}{4}."

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